Pennyhead Stopper Solid Glass

Solid glass stoppers with closed bottom and taper ground inner joint. These stoppers are used to close glassware items such as flasks, cylinders, funnels.

Properties of Glassware and Plasticware

• Solid plug type
• With sealed bottom and vertical penny head
• With 24/40 inner joint
• Borosilicate 3.3 glass
• Conforms to ASTM E438 Type 1Class A standard